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A Dual‐Resonant Metamaterial in Terahertz Regime
Author(s) -
Guo Wanyi,
He Lianxing,
Sun Hao,
Li Biao,
Zhao Hongwei,
Sun Xiaowei
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27765
Subject(s) - terahertz radiation , metamaterial , broadband , optoelectronics , multi band device , microwave , permittivity , gallium arsenide , materials science , terahertz time domain spectroscopy , split ring resonator , optics , metamaterial absorber , terahertz spectroscopy and technology , physics , tunable metamaterials , electrical engineering , engineering , dielectric , quantum mechanics , antenna (radio)
ABSTRACT The design, fabrication, and measurement of a dual‐band terahertz (THz) metamaterial based on gallium arsenide substrate are presented. The proposed subwavelength structure provides two distinct electrical resonances near 0.39 and 0.59 THz. Measured results obtained from the THz time‐domain spectroscopy show good agreement with the simulation results. Effective medium parameters show negative values of permittivity during two frequency bands of 0.38–0.44 THz and 0.59–0.64 THz. This metamaterial is expected to enhance the realization of broadband and multiband functional devices in THz regime. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2095–2099, 2013